Hydronic and Espar Heat
Last year we modified our Winnebago View to be able to use the motorhome (full water, showers, dump tanks, without Propane) throughout the Wisconsin winters. I thought I'd share the writeup that I di...
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Water Heater Hydronic Heat Steps:
-- Added check value between the hot and cold water piping located under the kitchen sink.
-- Added (2) Solar DC Circulation Pump Topsflo TS5 15PV to the output of the water heater. Wired these pumps to a switch on the control wall (one/both/off).
-- Added Heat Exchanger - Cozy III - EXE-103-0EX? to under the dinette and another one in the bathroom (located in the water pump compartment). Wire the fans to switches on the control wall (high/low/off). The Cozy III Heat Exchangers are plumbed into the hot water piping of the coach. The hot water exits the water heater and goes to the dinette Cozy III and then to the bathroom Cozy III and then onto the rest of the coach's plumbing.
-- Created a smaller loop in the water piping by adding a Water Solenoid Electric Valve - 12v Dc 1/2" Normally Closed in the water pump compartment. This valve will open when the coach's thermostat calls for heat. This shortens the loop that the hot water needs to travel to get back to the hot water heater those keeping the water warmer longer.
-- Added ATWOOD MOBILE PRODUCTS 93105 Adjustable Electronic Thermostat. This allows me to set the hot water heater's temperature to 150+ degrees (my electronic thermostat controller showed 180 degrees). The greater the water temperature, the easier to heat.
-- Wired the coach's thermostat Heat Pump option to the control wall to control all the switches.
Steps to run Water Heater Hydronic Heat:
-- The Water Heater Hydronic heat can be used with Propane, Electric, and/or Espar heating the water. All 3 can be run at the same time or individually.
-- Set the electric temperature controller to 175 degrees (this will ensure that the cycles of the Atwood water heater will be controlled by the controller and not the water heater).
-- Set the coach's thermostat to Heat Pump option.
-- The Cozy III heat exchanger fans and the circulating pumps are automatically controlled by the coach's thermostat.
When the thermostat calls for heat, the circulating pump(s) will turn on and pump the water through the Cozy III heat exchangers and through all the coach's piping. The thermostat will cycle the circulating pump(s) and Cozy III's fans on and off based on the temperature.
-- Added check value between the hot and cold water piping located under the kitchen sink.
-- Added (2) Solar DC Circulation Pump Topsflo TS5 15PV to the output of the water heater. Wired these pumps to a switch on the control wall (one/both/off).
-- Added Heat Exchanger - Cozy III - EXE-103-0EX? to under the dinette and another one in the bathroom (located in the water pump compartment). Wire the fans to switches on the control wall (high/low/off). The Cozy III Heat Exchangers are plumbed into the hot water piping of the coach. The hot water exits the water heater and goes to the dinette Cozy III and then to the bathroom Cozy III and then onto the rest of the coach's plumbing.
-- Created a smaller loop in the water piping by adding a Water Solenoid Electric Valve - 12v Dc 1/2" Normally Closed in the water pump compartment. This valve will open when the coach's thermostat calls for heat. This shortens the loop that the hot water needs to travel to get back to the hot water heater those keeping the water warmer longer.
-- Added ATWOOD MOBILE PRODUCTS 93105 Adjustable Electronic Thermostat. This allows me to set the hot water heater's temperature to 150+ degrees (my electronic thermostat controller showed 180 degrees). The greater the water temperature, the easier to heat.
-- Wired the coach's thermostat Heat Pump option to the control wall to control all the switches.
Steps to run Water Heater Hydronic Heat:
-- The Water Heater Hydronic heat can be used with Propane, Electric, and/or Espar heating the water. All 3 can be run at the same time or individually.
-- Set the electric temperature controller to 175 degrees (this will ensure that the cycles of the Atwood water heater will be controlled by the controller and not the water heater).
-- Set the coach's thermostat to Heat Pump option.
-- The Cozy III heat exchanger fans and the circulating pumps are automatically controlled by the coach's thermostat.
When the thermostat calls for heat, the circulating pump(s) will turn on and pump the water through the Cozy III heat exchangers and through all the coach's piping. The thermostat will cycle the circulating pump(s) and Cozy III's fans on and off based on the temperature.
